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JavaScript, elegant way to check nested object properties for null/undefined [duplicate]
a "problem" which i have every now and then is that i have an object e.g. user = {} and through the course of using the app this gets populated. Let's say somwhere, after an AJAX call or something i do this:
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How can I get enum possible values in a MySQL database?
...ub.com/thiswolf/codeigniter-enum-select-boxes
– You Know Nothing Jon Snow
Jul 7 '13 at 16:28
3
PH...
Parsing a string into a boolean value in PHP
... This function works flawlessly, thank you! But your links are now 404.
– servermanfail
Dec 21 '18 at 6:27
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How to get a key in a JavaScript object by its value?
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Actually it's ok if you know things like that the for-in loop goes down the property chain which means "for(var key in obj)" would give you "getKeyByValue" as "key" at some point.
– user659025
Oct 22 '12 at 15:1...
How to run a method every X seconds
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With Kotlin, we can now make a generic function for this!
object RepeatHelper {
fun repeatDelayed(delay: Long, todo: () -> Unit) {
val handler = Handler()
handler.postDelayed(object : Runnable {
override fun r...
A positive lambda: '+[]{}' - What sorcery is this? [duplicate]
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The type of test in auto test = +[]{}; is therefore deduced to void(*)(). Now the second line is easy: For the second lambda/closure object, an assignment to the function pointer triggers the same conversion as in the first line. Even though the second lambda has a different closure type, the resul...
Count immediate child div elements using jQuery
...d sometime back, just wanted to share so that this could help someone from now
– manikanta
Aug 16 '11 at 20:14
Where i...
Get a specific bit from byte
...t;< (4-1) == 8 (2^3)
00000001 << (4-1) == 00001000
Now you know how it's done, what's going on at the low level, and why it works.
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Can I extend a class using more than 1 class in PHP?
... I actually quite like the idea of extending the class Are there any known limitations of doing it this way?
– atomicharri
Dec 10 '08 at 18:12
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SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/
...p file (In my case 2.4.5)
Unzip it
run "ruby setup.rb" in unzipped folder
now run gem install command
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